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Schmidt-Cassegrain telescopes can collect frost or dew on viewing plates, but simple heating devices can keep viewing crystal clear. Care for Schmidt-Cassegrain telescopes with an observatory director in this free astronomy video.
Schmidt-Cassegrain telescopes use mirrors and lenses to form a telescope incorporating Newtonian mirrors and a redirecting lens. Study Schmidt-Cassegrain telescopes with an observatory director in this free astronomy video.
